日本語フィールド
著者：Ohto, Keisuke; Terada, Masashi; Shiratsuchi, Koji; Cierpiszewski, Ryszard; Inoue, Katsutoshi題名：A solvent extraction kinetic study of silver ion with a crossed type carboxylic acid derivative of calix[4]arene発表情報：Solvent Extraction Research and Development, Japan 巻: 14 ページ: 145-150キーワード：概要：抄録：The solvent extn. of silver ion with 25,27-bis(carboxymethoxy)-26,28-bis(carboxypropoxy)-5,11,17,23-tetrakis(1,1, 3,3-tetramethylbutyl)calix[4]arene from highly acidic nitrate media to chloroform was studied. Although the present extractant was capable of extg. silver ion under such conditions, the extn. rate was extremely slow compared with that of the ketone deriv. of calix[4]arene [see Ohto, K. et al.(1997)]. The extn. kinetic study of silver ion at varying concns. of nitric acid showed that the rate-detg. step of the extn. was the uptake of nitrate ion as a counter-anion. It was suggested that the extremely slow extn. rate was also attributed to the elec. charge repulsion between the hydroxyl or carbonyl oxygens of the extractant and the nitrate anion.英語フィールド
Author：Ohto, Keisuke; Terada, Masashi; Shiratsuchi, Koji; Cierpiszewski, Ryszard; Inoue, KatsutoshiTitle：A solvent extraction kinetic study of silver ion with a crossed type carboxylic acid derivative of calix[4]areneAnnouncement information:Solvent Extraction Research and Development, Japan Vol: 14 Page: 145-150An abstract：The solvent extn. of silver ion with 25,27-bis(carboxymethoxy)-26,28-bis(carboxypropoxy)-5,11,17,23-tetrakis(1,1, 3,3-tetramethylbutyl)calix[4]arene from highly acidic nitrate media to chloroform was studied. Although the present extractant was capable of extg. silver ion under such conditions, the extn. rate was extremely slow compared with that of the ketone deriv. of calix[4]arene [see Ohto, K. et al.(1997)]. The extn. kinetic study of silver ion at varying concns. of nitric acid showed that the rate-detg. step of the extn. was the uptake of nitrate ion as a counter-anion. It was suggested that the extremely slow extn. rate was also attributed to the elec. charge repulsion between the hydroxyl or carbonyl oxygens of the extractant and the nitrate anion.